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WorksheetsRAD 136 CT/MRI/Nuc Med
Total questions: 12
Worksheet time: 6mins
First-generation CT scanners scanned the only.
abdomen
thorax
pelvis
head
The CT table is
made of carbon graphite
rated for maximum weight.
all of the above
motor-driven
all above options
Contemporary CT scanners use solid state detectors. These detectors utilize
sodium iodide crystals
xenon gas
rare earth ceramic scintillators
freon gas
In CT imaging a ____ artifact is caused by motion.
beam-hardening
star
ring
streak
The rotation of the axis of rotation is termed
precession
nuclear orientation
rerotation
frequency
The source of magnetic fields within the body
is the spinning nucleus of an atom
are the neutrons
are the stationary electrons
all of the above
MRI has been achieved with magnets called...
resistive
superconductive
permanent
all of the above
Contrast-enhanced MR images uses ______ as the contrast material of choice.
iodine
gadolinium
barium
hydrogen
The time it takes for a radioactive nucleus to decay to 1/2 its original activity level is termed its
half-value layer
inverse decay quotient
half-life
decay scheme
The physical half-life of technetium-99 is approximately
110 minutes
6 hours
2 hours
73 hours
The biological half-life of a radionuclide takes into account its
physical decay scheme
physical half-life
metabolism within the human body
effective half-life
The isotope of choice for most nuclear medicine medical procedures is
Gallium-67
Fluorine-18
Iodine-131
Technetium-99m
